CN204658972U - Towards the Pneumatic double-acting biological 3D printing head structure of many file printings - Google Patents
Towards the Pneumatic double-acting biological 3D printing head structure of many file printings Download PDFInfo
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- CN204658972U CN204658972U CN201520335843.7U CN201520335843U CN204658972U CN 204658972 U CN204658972 U CN 204658972U CN 201520335843 U CN201520335843 U CN 201520335843U CN 204658972 U CN204658972 U CN 204658972U
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Abstract
The utility model discloses a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure, comprise at least two group extrusion molding unit, described extrusion molding unit comprises lower house, upper shell, outer spiral cover, piston, inner core, Compress Spring, barrel, inner swiveling closing, quick connector and extrudes syringe needle; Described upper shell is connected with lower house, described outer spiral cover is connected with upper shell by screw thread, described quick connector is connected with outer spiral cover, described piston is installed with lower house inner, described Compress Spring is arranged between piston and lower house, and described inner core is connected with piston, and described barrel is arranged in inner core, barrel opening part is threaded connection an inner swiveling closing, and described extrudes the bottom that syringe needle is arranged on barrel.
Description
Technical field
The utility model relates to a kind of biological 3D printing head structure being suitable for the Pneumatic double-acting of many file printings manufactured for biological tissue, for Cell and organism file printing, belongs to tissue engineering technique and biological 3D printing field.
Background technology
For the treatment of impaired bulk soft tissue and internal organs, it is the very effective methods for the treatment of of one that human tissue organ transplants.But because the problems such as organ donor source shortage, immunological rejection exist, there is the difficulty being difficult to overcome in organ transplant treatment in practice.And the proposition of organizational project opens new approach for solving the problem.Organizational project be by living cells by conforming to someway on the support of biomaterial matrix or preparation, come constructing function tissue substituent.Then, after the tissue substituent of structure being carried out cultivating in patients with implantation body, replace original pathological tissues organ and realize disease treatment to recover original physical function.The research of current organization engineering skin and use effective illustration with regard to the good development prospect of organizational project.
Tradition Tissue Engineering Study is limited to cell implanted prosthetics always, namely " is implanted on support by cell " in this organizational project inherent technology link, different types of Cell and organism material accurately cannot be navigated to internal stent different spatial.In fact, along with the propelling of Tissue Engineering Study, research work progressively prolongs life to bulk soft tissue and internal organs aspect, because these tissues and organ are often containing various kinds of cell and biomaterial, and different cell or material have specific spatial arrangement, therefore above-mentioned technical limitation highlights more.
In recent years, the fast development of 3D printing technique, for industry manufacture opens new manufacture production model.In biological field, the technology such as biometric print, cell three-dimensional controlled tissue are also applied and give birth to.These technology have the ability of operation individual cells or single composition microsize drop, can the accurately locus of control operation object and distribution, there is huge meaning for the locus deposition realizing Cell and organism material not of the same race in bulk tissue and organ building process.Therefore, the inexorable trend that biometric print technology is future organization engineering research is developed.And in a typical biometric print machine, one of critical component is exactly the shower nozzle that is shaped.
In order to the structure requirement of the various kinds of cell and material that meet bulk soft tissue and internal organs, need to develop a kind of many material formings shower nozzle.Many material formings shower nozzle generally adopts multiple shower nozzle to walk abreast and is arranged on sustained height, and each shower nozzle can process a kind of material or cell.Generally only having a shower nozzle in print procedure in work, just may there is the interference to structure texture forming face in other shower nozzles that sustained height is in shape of awaiting orders.For addressing this is that, Pu Xiang university of Korea S Dong-Woo Cho teaches many shower nozzles tissue/organ manufacture system of team's exploitation, and the partly integrated 6 groups of shower nozzles of its shower nozzle, wherein 4 groups is pneumatic extrusion molding shower nozzle, 4 groups of position piston extrusion molding shower nozzles.In order to shower nozzle work and two states of awaiting orders, often organize shower nozzle and be equipped with a drive motors, by transmission mechanism, the whole nozzle component namely participating in work is transferred to applicable height, utilize difference in height to separate with other armed state showerhead, can effectively avoid awaiting orders shower nozzle in print procedure to the situation of forming face interference.But too much owing to applying drive unit, its system relative complex, cost is higher, and does not have extensibility.
In order to distinguish two kinds of shower nozzle states of awaiting orders and work in guarantee, the situation that avoids interference occurs, simplifies its system architecture simultaneously, improves extensibility, and the utility model provides a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure.
Summary of the invention
The technical solution of the utility model is as follows:
Pneumatic double-acting biological 3D printing head structure towards many file printings comprises at least two group extrusion molding unit, and described extrusion molding unit comprises lower house, upper shell, outer spiral cover, piston, inner core, Compress Spring, barrel, inner swiveling closing, quick connector and extrudes syringe needle; Described upper shell is connected with lower house, described outer spiral cover is connected with upper shell by screw thread, described quick connector is connected with outer spiral cover, described piston is installed with lower house inner, described Compress Spring is arranged between piston and lower house, and described inner core is connected with piston, and described barrel is arranged in inner core, barrel opening part is threaded connection an inner swiveling closing, and described extrudes the bottom that syringe needle is arranged on barrel.
Preferably, described upper shell and lower house are by screw compact siro spinning technology, and contact surface embedding sealing material seals; Described quick connector and outer spiral cover are threaded connection, and can connect various external diameter flexible pipe according to institute's erection joint specification difference.
Preferably, described piston can carry out sliding motion in lower house inside, downward maximum displacement h, installs sealing ring and realize sealing between piston and lower house; Described Compress Spring is arranged between piston and lower house, and spring is in compressive state; The lower surface of described upper shell can be ejected by Compress Spring by limit slip piston.
Preferably, described inner core can with piston sliding motion.
Preferably, described inner swiveling closing comprises inner swiveling closing housing, valve pocket, Mini compressed spring, spool; Together with being connected by screw between described valve pocket with inner swiveling closing housing, uniform two radial passages on valve pocket; Described spool is arranged on valve pocket inside, can along the sliding motion of valve pocket endoporus, good seal between spool and valve pocket; Described Mini compressed spring fitting, between spool and valve pocket, is in compressive state; Inner swiveling closing housing central bore is hidden sealing by normal condition bottom spool under the action of the spring, and inner swiveling closing case top center is provided with valve port.
Preferably, described spiral cover, upper shell, lower house, piston, inner core and inner swiveling closing form a cavity A; Described barrel, inner swiveling closing and extrude syringe needle and form a cavity B; Separated by inner swiveling closing structure between cavity A and chamber B.
Multiple shower nozzle of the present utility model can control height of deposition with a motor and corresponding transmission device in vertical direction.And multiple ejection head unit utilizes the Pneumatic pressure itself extruded to drive the h that moves downward of ejection head unit intraware, the shower nozzle of work is selected from other shower nozzles.Like this, both avoided other shower nozzles to the interference of work forming face, also simplied system structure greatly, reduced costs;
Each ejection head unit compact conformation of the present utility model, transmission requires low, is applicable to extensive spread, combination operation, the greatly ability to work of lifting means.
When printing complete, passing ratio valve reduces or opening pressure input, air pressure in cavity a and c recovers normal pressure, moving upward at Mini compressed spring action bottom spool makes valve port and radial passage disconnect, simultaneously under Compress Spring effect, piston upwards is to maximum displacement place, and drive needle retractable to elemental height, whole nozzle component returns to original state.
Accompanying drawing explanation
Fig. 1 is a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure of 2 × 2 forms;
Fig. 2 is a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure front view of 2 × 2 forms;
Fig. 3 is a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure top view of 2 × 2 forms;
Fig. 4 is the extrusion molding cell schematics of a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure;
Fig. 5 is the schematic diagram of inner swiveling closing structure;
Fig. 6 is the two states of ejection head unit: left hand view is armed state, and right side is duty.
Detailed description of the invention
Concrete structure of the present utility model, operation principle and course of work content is further illustrated below in conjunction with accompanying drawing 1 ~ 6 and embodiment.
A kind of Pneumatic double-acting towards many file printings of the utility model design biological 3D printing head structure, comprises at least two group ejection head units.The utility model is for Fig. 1 form, and comprise four groups of ejection head units of the first ejection head unit 1, second ejection head unit 2, the 3rd ejection head unit 3 and the 4th ejection head unit 4, actual shower nozzle quantity and arrangement form can do self-defined.
Four groups of ejection head unit cellular constructions are identical, linked together by same lower house 5.Each ejection head unit comprises fixed part and movable part two parts composition.Fixed part comprises upper shell 6, lower house 5, outer spiral cover 7 and quick connector 12, and upper shell 5 and lower house 6 are linked together by plug screw, and contact surface encapsulant does encapsulation process; Outer spiral cover 7 is threadedly connected with upper shell 7, and contact surface has good sealing, adds when printing liquid or cleaning shower nozzle and can take off spiral cover 7 voluntarily; Quick connector 12 is threaded connection mode and is arranged on upper shell 7, nozzle connecting can be received on the power input flexible pipe of various outer diameter by the quick connector 7 changing different size.
Inner movable part comprises piston 8, inner core 18, Compress Spring 9, barrel 10 and inner swiveling closing 11 and forms.Piston 8 is inner at lower house 5, coaxially installs, can slide up and down along lower house 5 inwall with lower house 5, and piston 8 and lower house directly seal with sealing ring 14; Compress Spring 9 is arranged between lower house 5 and piston 8, is in compressive state, and under original state, Compress Spring 9 promotes piston 8 to maximum displacement place, and namely the upper surface of piston 8 contacts with the lower surface of upper shell 6; Inner core 18 and piston 8 are fixed together, and can move up and down with piston 8, inner core 18 inside is inserted with barrel 10, contact surface good seal; Also be provided with inner swiveling closing 11 in barrel 10 beginning place, inner swiveling closing 11 is connected with barrel internal thread by external screw thread 141, can take off voluntarily or install.
Inner swiveling closing structure comprises spiral cover housing 14, valve pocket 15, spool 16 and microsprings 17.Valve pocket 15 is arranged on spiral cover housing 14, is connected by the screw of axial distribution, contact surface encapsulant good seal; It is inner that spool 16 is arranged on valve pocket 15, can slide up and down in valve pocket 15; Microsprings 17 is arranged between valve pocket 15 and spool 16, is in compressive state, acts on bottom spool 16 closed by valve port 141 under original state at Compress Spring 16; Spool 16 and valve pocket 15 contact surface good seal; Valve pocket 15 radial direction has radial passage 151.
When valve port 141 passes into a certain size pressure, spool 16 can be promoted and move, valve port 141 is connected with radial passage 151.
Syringe needle 13 is arranged on 18 lower ends on barrel, can adopt injection needle or Glue dripping head, also can adopt self-control syringe needle.
Utility model works principle:
Before printing, cell and biomaterial solution are installed in barrel 10.Under original state, under Compress Spring 9 acts on, piston 8 is in top, and all ejection head units are in same state, and therefore syringe needle 13 top is positioned at sustained height; Under Mini compressed spring 17 acts on, spool 16 is positioned at top, and inner swiveling closing valve port 141 is also in closed condition.
When ejection head unit 2 needs work, the tracheae be connected with quick connector 12 inputs gas, first forms certain pressure at enclosed cavity a.When pressure reaches P1, the active force produced on the surface such as piston 8 and inner swiveling closing 11 overcomes the elastic force of Compress Spring 9, and promote with piston 8 and coupled inner core 18, barrel 10 and extrude syringe needle 13 slippage downwards, maximum glide heights is h.Like this, by utilizing glide heights h the ejection head unit 2 of duty and other armed state showerhead to be separated, avoid armed state shower nozzle to the interference of forming face.Now, under the effect of Mini compressed spring 17, the valve port 141 of inner swiveling closing 11 is still in closed condition, not UNICOM between cavity a and cavity b.
Further raising input pressure, when pressure reaches P2, pressure overcomes the elastic force of microsprings 17 at the active force of spool 16 upper surface, and drag spool 16 and move, valve port 141 is opened, UNICOM between air cavity a and cavity b.Gas enters cavity b from cavity a by valve port 141 and radial passage 151.Maintain or continue to improve input pressure, in the pressure P 3 that cavity b inside is formed.Under the effect of pressure P 3, in barrel 10, solution is at the uniform velocity extruded from syringe needle 13, falls in forming face.
Whole jet head sets is arranged in three-dimensional movement platform, has three-dimensional coordinate and the motion path of platform courses shower nozzle.
By the effective pressure active area of the rigidity of spring 9 and sliding assembly, quality and coefficient of friction, can balance elastic force, gravity, relation between frictional force and pressure, the pressure P 1 that can obtain different size is worth.
Multiple shower nozzle of the present utility model can control height of deposition with a motor and corresponding transmission device in vertical direction.And multiple ejection head unit utilizes the Pneumatic pressure itself extruded to drive the h that moves downward of ejection head unit intraware, the shower nozzle of work is selected from other shower nozzles.Like this, both avoided other shower nozzles to the interference of work forming face, also simplied system structure greatly, reduced costs;
Each ejection head unit compact conformation of the present utility model, transmission requires low, is applicable to extensive spread, combination operation, the greatly ability to work of lifting means.
When printing complete, passing ratio valve reduces or opening pressure input, air pressure in cavity a and c recovers normal pressure, act on bottom spool 16 at Mini compressed spring 17 to move upward valve port 141 and radial passage 151 are disconnected, simultaneously under Compress Spring 9 acts on, piston 8 moves upward to maximum displacement place, and drive syringe needle 13 to retract to elemental height, whole nozzle component returns to original state.
Claims (6)
1. the biological 3D printing head of the Pneumatic double-acting towards a many file printings structure, it is characterized in that comprising at least two group extrusion molding unit, described extrusion molding unit comprises lower house, upper shell, outer spiral cover, piston, inner core, Compress Spring, barrel, inner swiveling closing, quick connector and extrudes syringe needle; Described upper shell is connected with lower house, described outer spiral cover is connected with upper shell by screw thread, described quick connector is connected with outer spiral cover, described piston is installed with lower house inner, described Compress Spring is arranged between piston and lower house, and described inner core is connected with piston, and described barrel is arranged in inner core, barrel opening part is threaded connection an inner swiveling closing, and described extrudes the bottom that syringe needle is arranged on barrel.
2. a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure as claimed in claim 1, is characterized in that: described upper shell passes through screw compact siro spinning technology with lower house, and contact surface embedding sealing material seals; Described quick connector and outer spiral cover are threaded connection, and can connect various external diameter flexible pipe according to institute's erection joint specification difference.
3. a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure as claimed in claim 1, it is characterized in that: described piston can carry out sliding motion in lower house inside, downward maximum displacement h, installs sealing ring and realizes sealing between piston and lower house; Described Compress Spring is arranged between piston and lower house, and spring is in compressive state; The lower surface of described upper shell can be ejected by Compress Spring by limit slip piston.
4. a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure as described in claim 1 or 3, is characterized in that: described inner core can with piston sliding motion.
5. a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure as claimed in claim 1, is characterized in that: described inner swiveling closing comprises inner swiveling closing housing, valve pocket, Mini compressed spring, spool; Together with being connected by screw between described valve pocket with inner swiveling closing housing, uniform two radial passages on valve pocket; Described spool is arranged on valve pocket inside, can along the sliding motion of valve pocket endoporus, good seal between spool and valve pocket; Described Mini compressed spring fitting, between spool and valve pocket, is in compressive state; Inner swiveling closing housing central bore is hidden sealing by normal condition bottom spool under the action of the spring, and inner swiveling closing case top center is provided with valve port.
6. a kind of Pneumatic double-acting towards many file printings biological 3D printing head structure as described in claim 1 or 5, is characterized in that: described spiral cover, upper shell, lower house, piston, inner core and inner swiveling closing form a cavity A; Described barrel, inner swiveling closing and extrude syringe needle and form a cavity B; Separated by inner swiveling closing structure between cavity A and chamber B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335843.7U CN204658972U (en) | 2015-05-22 | 2015-05-22 | Towards the Pneumatic double-acting biological 3D printing head structure of many file printings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520335843.7U CN204658972U (en) | 2015-05-22 | 2015-05-22 | Towards the Pneumatic double-acting biological 3D printing head structure of many file printings |
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| CN204658972U true CN204658972U (en) | 2015-09-23 |
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| CN201520335843.7U Withdrawn - After Issue CN204658972U (en) | 2015-05-22 | 2015-05-22 | Towards the Pneumatic double-acting biological 3D printing head structure of many file printings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827673A (en) * | 2015-05-22 | 2015-08-12 | 杭州汉卓机电科技有限公司 | Pneumatic double-acting biological 3D printing nozzle structure oriented to multi-material printing |
| CN113021887A (en) * | 2021-03-10 | 2021-06-25 | 扬州工业职业技术学院 | 3D printing nozzle suitable for industrial robot arm and use method thereof |
-
2015
- 2015-05-22 CN CN201520335843.7U patent/CN204658972U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827673A (en) * | 2015-05-22 | 2015-08-12 | 杭州汉卓机电科技有限公司 | Pneumatic double-acting biological 3D printing nozzle structure oriented to multi-material printing |
| CN113021887A (en) * | 2021-03-10 | 2021-06-25 | 扬州工业职业技术学院 | 3D printing nozzle suitable for industrial robot arm and use method thereof |
| CN113021887B (en) * | 2021-03-10 | 2023-05-30 | 扬州工业职业技术学院 | 3D printing spray head suitable for industrial robot arm and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20171205 |